package com.atguigu.gulimall.seckill.scheduled;

import com.atguigu.gulimall.seckill.service.SeckillService;
import lombok.extern.slf4j.Slf4j;
import org.redisson.api.RLock;
import org.redisson.api.RedissonClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;

import java.util.concurrent.TimeUnit;

//秒杀商品定时上架 每天晚上三点上架最近三台你需要秒杀的商品
//
@Service
@Slf4j
public class SeckillSkuScheduled {
    @Autowired
    SeckillService seckillService;
    @Autowired
    RedissonClient redissonClient;
    private final String upload_lock="seckill:upload:lock";
    @Scheduled(cron = "*/3 * * * * ?")
    public void uploadSeckillSkuLatest3Days(){
        //1.重复上架无需处理
        log.info("上架秒杀的商品信息。。。。。");
        //分布式锁。锁的业务执行完成，状态已经更新完成。释放锁以后。其他人获取到就会拿到最新的状态
        //分布式锁
        RLock lock = redissonClient.getLock(upload_lock);
        lock.lock(10, TimeUnit.SECONDS);
        try {
            seckillService.uploadSeckillSkuLatest3Days();
        }finally {
            lock.unlock();
        }
    }
}
